1. mkfs.jffs2 -p -b -f -U -v -o /tmp/tmp.jffs2 -d /etc/jffs2
SPI-NORだしerase sizeは64Kだろう、と思って普通に出したやつ
root@OpenWrt:~# mkfs.jffs2 -p -b -f -U -v -o /tmp/tmp.jffs2 -d /etc/jffs2
/
f 0644 7476168 ( 7607884) 0:0 nos.img
Compression mode: priority
Compressors:
none compr: 1937 blocks (7476168) decompr: 0 blocks
rtime (prio:50) + compr: 0 blocks (0/0) decompr: 0 blocks
Compression errors: 0
root@OpenWrt:~# mtd -e firmware write /tmp/tmp.jffs2 firmware
Unlocking firmware ...
Erasing firmware ...
Writing from /tmp/tmp.jffs2 to firmware ...
root@OpenWrt:~# reboot
...
[ 1255.845041] reboot: Restarting system
System is initializing...
**************************************************
WINBOND/
Net Initialization Completed
U-boot version: V2.00
Hit Ctrl+B to stop autoboot: 0
###########################################
######## Uboot for Flash Main Menu ########
###########################################
[1] Enable Network On
[2] Config Ethernet Environment Variables
[3] Ping Host IP Address
[4] Running the System Kernel image
[5] Burn the production firmware Bin
[6] Set Serail Number&System CPU MAC&Software License
[7] Set Serail Number&System CPU MAC
[8] Perform Reset of the Uboot
[9] Show Uboot Saved Info
Enter your selection:
Enter the password:(1-32 characters)
********************
Please wait for PHY init-time ...
Boot# debug_unish_env
RTL9300# chpart nor0,3
RTL9300# fsinfo
### filesystem type is JFFS2
Compression: NONE
frag count: 223
compressed sum: 455624
uncompressed sum: 455624
Compression: ZERO
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: RTIME
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: RUBINMIPS
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: COPY
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: DYNRUBIN
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: ZLIB
frag count: 0
compressed sum: 0
uncompressed sum: 0
Compression: LZO
frag count: 0
compressed sum: 0
uncompressed sum: 0
RTL9300# mw.l 0x81000000 0 40
RTL9300# md.l 0x81000000 40
81000000: 00000000 00000000 00000000 00000000 ................
81000010: 00000000 00000000 00000000 00000000 ................
81000020: 00000000 00000000 00000000 00000000 ................
81000030: 00000000 00000000 00000000 00000000 ................
81000040: 00000000 00000000 00000000 00000000 ................
81000050: 00000000 00000000 00000000 00000000 ................
81000060: 00000000 00000000 00000000 00000000 ................
81000070: 00000000 00000000 00000000 00000000 ................
81000080: 00000000 00000000 00000000 00000000 ................
81000090: 00000000 00000000 00000000 00000000 ................
810000a0: 00000000 00000000 00000000 00000000 ................
810000b0: 00000000 00000000 00000000 00000000 ................
810000c0: 00000000 00000000 00000000 00000000 ................
810000d0: 00000000 00000000 00000000 00000000 ................
810000e0: 00000000 00000000 00000000 00000000 ................
810000f0: 00000000 00000000 00000000 00000000 ................
RTL9300# fsload openwrt-realtek-rtl930x-xikestor_sks8300-8x-nos.img
loading image to 0x81000000 with JFFS2
load image size: 7476168 bytes
RTL9300# md.l 0x81000000 40
81000000: 00000000 00000000 00000000 00000000 ................
81000010: 00000000 00000000 00000000 00000000 ................
81000020: 00000000 00000000 00000000 00000000 ................
81000030: 00000000 00000000 00000000 00000000 ................
81000040: 00000000 00000000 00000000 00000000 ................
81000050: 00000000 00000000 00000000 00000000 ................
81000060: 00000000 00000000 00000000 00000000 ................
81000070: 00000000 00000000 00000000 00000000 ................
81000080: 00000000 00000000 00000000 00000000 ................
81000090: 00000000 00000000 00000000 00000000 ................
810000a0: 00000000 00000000 00000000 00000000 ................
810000b0: 00000000 00000000 00000000 00000000 ................
810000c0: 00000000 00000000 00000000 00000000 ................
810000d0: 00000000 00000000 00000000 00000000 ................
810000e0: 00000000 00000000 00000000 00000000 ................
810000f0: 00000000 00000000 00000000 00000000 ................
FSは認識されるが全く読めていない
ふとSPI-NORの4Kセクタについて思い出して確認したら、stockのJFFS2は4Kであり、これが原因と思われる
$ busybox hexdump -n $((0x10000)) -C mtd3_firmware.bin | grep "^[0-9]\{8\} 19 85 00 03"
00000000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00001000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00002000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00003000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00004000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00005000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00006000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00007000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00008000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
00009000 19 85 00 03 00 00 00 0c f0 60 dc 98 19 85 e0 02 |.........`......|
